<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>08-表单-input占位文本</title>
</head>
<body>
    <h1>input占位文本</h1>
    文本框: <input type="text" placeholder="输入用户名">
    <br></br>
    密码框: <input type="password" placeholder="输入密码">
    <br></br>
    
</body>
</html>